PUBLIC LAW 95-79 [P.L. 95-79] TITLE 50, CHAPTER 32, SECTION 1520 "CHEMICAL AND BIOLOGICAL WARFARE PROGRAM" "The use of human subjects will be allowed for the testing of chemical and biological agents by the U.S. Department of Defense, accounting to Congressional committees with respect to the experiments and studies. The Secretary of Defense [may] conduct tests and experiments involving the use of chemical and&#65279; biological [warfare] agents on civilian populations [within the United States].